Back
Genesis is the first dual action anti-fall haircare range: FOR ALL WOMEN, IN ALL LIFESTYLES, WITH ALL DEGREE OF HAIR FALL.
Powered with a cocktail of highly efficient ingredients to instantly strengthen and thicken the hair fiber for an immediate fuller look with more fiber strength, more fiber retention* and -84% less hair-fall**.
*Clinical study, 99 people, 6 weeks use.
**hair-fall due to breakage. Instrumental test on Bain Nutri-fortifiant + Masque Reconstituant + Ampoule/Sérum Aminexil.
HOW DOES GENESIS WORK?
A double action for your client:
Instantly: PROTECTS AGAINST DAILY EXTERNAL AGGRESSOR AND ANTIOXIDES thanks to Ginger roots and Edelweiss native cells.
Long Term: STOP HAIR-FALL FORTIFIES HAIR ANCHORAGE & RETENTION AND REDUCE HAIR-FALL FROM THE ROOTS thanks to Aminexil.
Sérum Anti-Chute Fortifiant benefits:
- Silicone-free.
- Strengthens hair day after day.
- 97% less hair fall due to breakage from brushing*.
*System of Bain Hydra-Fortifiant + Fondant Renforcateur + Sérum Fortifiant vs Non-Conditioning Shampoo.
WHO IS IT FOR?
Genesis targets every woman with hair fall need that would efficient, convenient and peasurable with :
- Instant result of hair care
- Efficacy of anti hair fall solutions
Activate scalp with the Serum Anti-Chute Fortifiant.
Use once daily in the morning or before going to bed during a 6-week period :
Step 1: Take 1 pipette until the mark.
Step 2: Apply 3 drops by section and repeat on the whole scalp with 4 doses.
Step 3: Massage gently, do not rinse.
Learn more on Access
Ask more information about this productGenesis Sérum Anti-Chute Fortifiant is enriched with GINGER ROOT, EDELWEISS NATIVE CELLS and AMINEXIL.
GINGER ROOTS: Known for its ability to protect against daily external aggressors.
EDELWEISS NATIVE CELLS: Capable to resist the most extreme conditions and is known in skincare for its antioxidants. It also has power & collagen-preserving properties.
AMINEXIL: Helps hair to anchor more solidly into the scalp & prevents collagen from hardening around hair follicles to reduce hair-fall from the roots.
Rating & Reviews
tn2607
41.756697406E12 31/08/2025
Genesis Serum Fortifiant Hair Serum
[This review was collected as part of a promotion.] My scalp feels balanced and comfortable, and my roots look healthier overall
Originaly posted on kerastase-usa.com
Queen Bee
51.756738185E12 01/09/2025
Kérastase Genesis Serum Fortifiant Amazing!
[This review was collected as part of a promotion.] This serum is amazing! After using it consistently, I’ve noticed new hair growth and my hair feels stronger and healthier. It’s lightweight, not greasy, and super easy to use. Definitely a game-changer for anyone dealing with thinning or fragile hair.
Originaly posted on kerastase-usa.com
Reignegard87
51.756672205E12 31/08/2025
Kerastase genesis serum
I have been using this product religiously for almost 4 yrs now . I can say that it helped me a lot in reducing hairfall and dry scalp. Since then, until today, I still use it, and i am still loving it!
Originaly posted on kerastase-usa.com
Edimar
51.756681205E12 31/08/2025
Genesis fortifying serum
Smells amazing, feels super light weight , I love it.
Originaly posted on kerastase-usa.com
Adriana G
51.756663206E12 31/08/2025
BEST PRODUCT
de verdad que es uno de los mejores productor que he utilizado, se siente el cambio en el cabello en el primer uso
Originaly posted on kerastase-usa.com
Tinkb 9
51.756680307E12 31/08/2025
So far, so good
This product is easy to use and I have noticed more new hair growth. I will continue to use it for 4-6 weeks. I wish the bottle lasted longer!
Originaly posted on kerastase-usa.com
daaaaaaak
31.756906838E12 03/09/2025
it does not work for me
i bought 3 bottle of this products to see if maybe with more that two or three months works , but for me doesn't do nothing. i lost my money on that even when i apply correctly every day and also bought the whole line GENESIS. i guess the mask ansd shampoo works but is it
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
We are sorry to hear the Genesis Serum Fortifiant didn't deliver the results you hoped for, especially after such a dedicated commitment to the whole line. We understand your frustration and appreciate you sharing your honest feedback.
Flor Sabat
51.756602009E12 30/08/2025
My hair improved 75%
[This review was collected as part of a promotion.] I started to use it a year ago and it worked very well. It is a good product but a little bit expensive to buy it regularly. But it works!
Originaly posted on kerastase-usa.com
WinnieB
51.756586704E12 30/08/2025
New growth with daily use! Bought a backup bottle
Kerastase is quickly becoming my favorite hair care brand — this was one of my first purchases after trying a billion different products and not getting consistent results.
I love how gentle and non- stimulating this feels going onto the scalp. Some growth serums have a tingle that doesn’t feel gentle enough for my scalp, creating heat and just making my hair feel a bit sticky.
This feels like water, absorbs without residue and is so easy to use! Been about 3-4 weeks and I have a bunch of baby hairs (new growth because it’s the color of my root and extra soft) — loving the results
Originaly posted on kerastase-usa.com
Radisellos
51.756579505E12 30/08/2025
Vale lo que cuesta
Tengo el cabello mucho más denso. Y me están saliendo muchos cabellos nuevos. Amo
Originaly posted on kerastase-usa.com
Anonymous
51.75658401E12 30/08/2025
Excellent
[This review was collected as part of a promotion.] This is an excellent product. I didn’t think I was gonna fall in love with it. I am purchasing it again.
Originaly posted on kerastase-usa.com
Yuly87
51.756566007E12 30/08/2025
Amazing!!!!
Great product! I’m seeing a big difference in my hair. Love it!****
Originaly posted on kerastase-usa.com
Emmy 25
41.756563307E12 30/08/2025
Really good product
Keeps my hair soft and helps with the oiliness on my hair. I like how my hair feels after applying it.
Originaly posted on kerastase-usa.com
Tidza2025
51.756523705E12 29/08/2025
Love it!
[This review was collected as part of a promotion.] Great product! Smells amazing and really works. Noticed a huge difference after 1 month of use.
Originaly posted on kerastase-usa.com
Jay997
51.756525506E12 29/08/2025
Amazing!!!
[This review was collected as part of a promotion.] This is one of the main products I restock on. It smells amazing and has kept my scalp feeling healthy. I love it so much!
Originaly posted on kerastase-usa.com
Collardgreen
51.756522806E12 29/08/2025
The BEST serum fortifiant!!! HANDS DOWN
[This review was collected as part of a promotion.] I have most of the serums just to mix and match and I have the things from mostly all collections and they all work wonders!!! This one has been with me since the beginning and it’s almost empty and the replacement should be here tomorrow or the following day! This one in specific comes automatically monthly!! It’s amazing no worlds needed! My hair stopped falling I chunks and balls of hair
Originaly posted on kerastase-usa.com
Jillian3222
51.756524608E12 29/08/2025
Gold in a bottle
[This review was collected as part of a promotion.] This serum is a pretty penny but my god it works!!! I have bleached thin hair and let me tell you…it’s saving my hair. Highly recommend
Originaly posted on kerastase-usa.com
avamay
41.756414809E12 28/08/2025
I like it, didn’t blow me away
I have a little bit of hair loss and this serum hasn’t done a lot for growth and scalp but it does make my hair feel healthy
Originaly posted on kerastase-usa.com
Karaaa
51.756392307E12 28/08/2025
This stuff works!
[This review was collected as part of a promotion.] I have been using this product for over a year. I am going through perimenopause & this is keeping my hair growing & less falling out
Originaly posted on kerastase-usa.com
Plukic
51.756440007E12 29/08/2025
Impressed
Wow, this product really works! My hair has been falling out like crazy, and ever since I started using this product, I see a lot less hair on my brush
Originaly posted on kerastase-usa.com
Maddes
51.756392307E12 28/08/2025
Must Have
This product to make such an incredible difference in my hair in my husband’s hair as well as someone who had started thinning. Also had someone with severe anemia, and my hair was falling out crazy and now when I brush my hair since I started using this, I see far less hair follicles in the brush so this product is definitely. this will be my second bottle.
Originaly posted on kerastase-usa.com
lea montgomery
41.756253707E12 26/08/2025
Seeing results already
Love the smell, noticed a lot let fall out/shedding of my hair, but putting it on at night did cause me to have to restyle my hair in the morning - typically with heat - which feels counter intuitive because it would leave a slight residue and cause my hair to curl/texture when I woke up. i'm expecting only better results as I continue to use it - only one month in so far!
Originaly posted on kerastase-usa.com
moline
51.756233009E12 26/08/2025
lo mejor
es primera ves que compro productos de esta marca, nunca pense que me fueran a gustar tanto, este suero de genesis es lo maximo, llevo 6 dias usandolo y aun no he visto resultados pero es un olor super agradable y me pelo se siente muy mas fuerte
Originaly posted on kerastase-usa.com
BMWise
51.756251905E12 26/08/2025
So good!!
[This review was collected as part of a promotion.] Obsessed with this product! It has been so great for my scalp especially postpartum
Originaly posted on kerastase-usa.com
MrsBck
41.756224011E12 26/08/2025
Some improvement
I purchased this for my daughter and myself who have both been experiencing hair loss, possibly due to some extreme recent stress. We used it for around 8 weeks. I did notice less hair fall and some regrowth for my daughter over the course of this time. As for myself, I have not seen much of a change. My daughter will continue to use it until the bottle runs out. After that we will try the initialiste serum.
Originaly posted on kerastase-usa.com
Melbelle
51.756181706E12 26/08/2025
Hair is growing
Getting a ton of baby hairs. Annoying but a sign my hair is growing!
Originaly posted on kerastase-usa.com
Manitas
51.756221306E12 26/08/2025
Good Serum!
[This review was collected as part of a promotion.] My hair has move volume after 1st time use. Smell really good. The serum doesn’t feel thick at all. Love it.
Originaly posted on kerastase-usa.com
SAMiLi
51.756135811E12 25/08/2025
GREAT PRODUCT
i love this product , its very light and my hair does not get greasy at all after using. Smells amazing!!
Originaly posted on kerastase-usa.com
HTX 624
51.756405044E12 28/08/2025
GROWING AND GLOWING
My hair has never been so healthy since I started this product. My hair is growing like crazy! It’s shiny and softer than ever! I use it after I wash my hair once a week while it is still damp. I comb my hair out and fill the vile that it comes with and put it down the middle of my part. I flip my head over and put it along my base hairline and just start rubbing it in. I let my hair air dry and I do not blow dry it anymore. I have never received more compliments on my hair!
Originaly posted on kerastase-usa.com
patito13
51.756008909E12 24/08/2025
growing again
It was a great experience, my scalp recovered, I finally said goodbye to dryness and my hair loss slowed down, a lot of new hair is coming.
Originaly posted on kerastase-usa.com
Rollerskate
51.755961206E12 23/08/2025
Love This Product!
I absolutely love this product. It smells fantastic on top of doing wonders for my hair.
Originaly posted on kerastase-usa.com
Elika26
51.755853209E12 22/08/2025
No more hair shed
It took about two bottles but the hair shedding reduced significantly. Works well.
Originaly posted on kerastase-usa.com
Hmhoneyyy
51.755870327E12 22/08/2025
My third bottle!!
Love this whole brand. Everything is smells amazing too! HIGHLY recommend!! It slowing getting my hair back to the healthy side.
Originaly posted on kerastase-usa.com
BrandiB
51.755870327E12 22/08/2025
Smells divine
[This review was collected as part of a promotion.] I do like this product however it does make my hair dry and crunchy. I have to break the cast by combing it out after it dries. It uncrunches very easily with a quick comb thru.
Originaly posted on kerastase-usa.com
Kim Jean
51.755838807E12 22/08/2025
Great product, good size and smells great! Highly
[This review was collected as part of a promotion.] Love the serum, my hair feels healthier overall and I will continue to repurchase
Originaly posted on kerastase-usa.com
Johanis
51.755815406E12 21/08/2025
Anonymous
51.755805509E12 21/08/2025
OBSSESSED!
I've been wanting this product for a while but never pulled the trigger due to the cost. I finally decided to do it and I ABSOLUTELY love it!
Originaly posted on kerastase-usa.com
JSZMina
51.755808205E12 21/08/2025
Already see a difference
I love the results. On my third bottle already! So easy to be consistent with. Love it!
Originaly posted on kerastase-usa.com
Arieshair
51.755761406E12 21/08/2025
Love it!!!!
[This review was collected as part of a promotion.] I love the smell, I do feel like my hair looks more lively if that makes sense. I was struggling with hair fall out for a while and I feel like this product has helped me a lot
Originaly posted on kerastase-usa.com
Gigipunzel
51.755746104E12 20/08/2025
Work d on my thin fine hair
[This review was collected as part of a promotion.] The formula didn't weigh down my hair and works well wet or on dry hair.
Originaly posted on kerastase-usa.com
Asega1
11.756395541E12 28/08/2025
More like water
This shouldn’t be considered a serum. It’s like water.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there Asega1, thank you for trying out our Genesis Serum Fortifiant Hair Serum. We are very disappointed to hear that you were not fully satisfied with our products. Your feedback is very important to us and we will surely be passing your comments along to our team. Thank you for taking the time to reach out!
Amh717
51.75571191E12 20/08/2025
Smell & stopped hair fall
I recently stopped using a hair line which caused my hair to fall out in clumps! It was so bad. I purchased the fortifiant serum and I’ve noticed such an improvement in regards to hairfall. My hair isn’t falling out as much as it was and I have only been using this product for 2 weeks!
Originaly posted on kerastase-usa.com
Lilyanna22
51.755619208E12 19/08/2025
Love it. Smells amazing
[This review was collected as part of a promotion.] Smells amazing and makes my scalp feel good without it making it oily
Originaly posted on kerastase-usa.com
Alex01
21.755828475E12 21/08/2025
Irritated my scalp
I really wanted to love it but it irritated my scalp. It became very flaky and itchy. I tried using it less, with one dose per night and washing my hair every 4 days. Still a lot of irritation with red spots in over my scalp.
Originaly posted on kerastase-usa.com
Barb516
11.755828456E12 21/08/2025
Extremely Drying!
I purchased this serum as part of the entire Genesis collection. The first time I used this product, I used the recommended 4 pipettes, and gently massaged it into my freshly washed wet hair, and styled with the Genesis thermique spray, and one pump of Kerastase Elixir Ultime oil. My hair was unmanageable straw. I tried cutting it down to using only two and then one pipette of the serum, but my hair was always so incredibly dry. Since I stopped using the serum, my hair texture and softness has improved. I would never recommend using this product.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Genesis Serum Fortifiant Hair Serum. We're truly sorry to hear this serum didn't work for your hair and caused such dryness. Your detailed feedback about your experience with the Genesis collection, and how your hair improved after stopping use, is incredibly valuable to us as we strive to create products that deliver the best results for everyone.
hello89
51.755529206E12 18/08/2025
AMAZING
[This review was collected as part of a promotion.] It smells amazing. I tend to shed a lot of hair so this has helped a lot. I’ve also purchased one for my mom because it’s that good.
Originaly posted on kerastase-usa.com
TLhair
51.755457207E12 17/08/2025
Love this product
I recently tried Kérastase Genesis Sérum Fortifiant Hair Serum, and I’m impressed! This lightweight, non-greasy, silicone-free formula delivers noticeable results—my hair feels stronger and looks shinier, yet remains soft to the touch.
Originaly posted on kerastase-usa.com
fh1221
41.75541581E12 17/08/2025
worth the hype
I was recommended this product from a friend, and it was worth it. I notice less hair fall, as well as hair growth. I am back to purchase again
Originaly posted on kerastase-usa.com
Sonjasays
51.755360906E12 16/08/2025
Less fallout
Been using this for about a month and have noticed less fallout than before.
Originaly posted on kerastase-usa.com
Jessyy
51.755349209E12 16/08/2025
Perfect for me
[This review was collected as part of a promotion.] Perfect for my hair I am fan number 1, it’s my favorite
Originaly posted on kerastase-usa.com
ASC 006
31.755719413E12 20/08/2025
Didn’t use long enough to see a difference
I don’t know if this did anything but I’m willing to try again!
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi ASC 006! We are sorry to hear that our Genesis Serum Fortifiant Hair Serum did make a difference. We hope you can give this product another try and see amazing results!
malenadc
41.755274511E12 15/08/2025
incredible serum
Es muy fresco y muy placentero de utilizar. No engrasa el cuerlo cabelludo
Originaly posted on kerastase-usa.com
SarahLe88
51.755283525E12 15/08/2025
Good
[This review was collected as part of a promotion.] Things are going well so far. I really like the smell."
Originaly posted on kerastase-usa.com
Merry H
51.755283525E12 15/08/2025
The best hair product invented
A must if you’re looking to cure hair breakage and fall out. I’ll never go back.
Originaly posted on kerastase-usa.com
Anonymous
51.755273586E12 15/08/2025
I loved
[This review was collected as part of a promotion.] Lo mejor de lo mejor, a detenido la caída de mi cabello volviéndolo más fuerte
Originaly posted on kerastase-usa.com
JuanitaMia
51.755225904E12 14/08/2025
crecimiento
51.755219609E12 14/08/2025
Crecimiento del pelo
[This review was collected as part of a promotion.] Muy buen producto, con su uso continuo vez el brillo y crecimiento del pelo
Originaly posted on kerastase-usa.com
Anonymous
51.755198908E12 14/08/2025
Amazing serum
My hair definitely is experiencing an upgrade with the serum. It’s war smoother and shiny. I can feel it stronger also.
Originaly posted on kerastase-usa.com
MariaM16
51.755191709E12 14/08/2025
Such a great serum
To be honest with you, I think to this point I have used at least four bottles of this serum, and I continue to repurchase it despite how quickly I go through it. Using the recommended 4 pipettes makes the product go by so fast, but in my opinion the benefits are so worth it. It’s definitely a good idea to stock up on this items if there’s a promotion going on because it is quite expensive. I recommend it to everyone who is experiencing breakage. Such a game changer!
Originaly posted on kerastase-usa.com
Pgytuu
51.755145805E12 14/08/2025
My fave!
[This review was collected as part of a promotion.] The best!!!!! I use it everyday that I was my hair and love it!
Originaly posted on kerastase-usa.com
BellaHair
51.755163507E12 14/08/2025
Great Product
Great product that stops my hair shedding. Not greasy and smells great
Originaly posted on kerastase-usa.com
Steph17
51.755180908E12 14/08/2025
Great product!
Smells great, been using it for 3 weeks already and I already see a difference!
Originaly posted on kerastase-usa.com
Megan123456
51.755107108E12 13/08/2025
On my 2nd bottle
[This review was collected as part of a promotion.] My hair dresser noticed how much new hair growth I have after using for only a few weeks!
Originaly posted on kerastase-usa.com
Gnightly
41.755105312E12 13/08/2025
feels nice
It is very runny but easily spreadable, smells nice and a cool feeling on the scalp.
Originaly posted on kerastase-usa.com
Hunie Sam
51.755129124E12 13/08/2025
Amazing
I’ve been using this for over a month now! Scalp dryness bye bye and shiny healthy hair has arrived. I am obsessed.
Originaly posted on kerastase-usa.com
Mhay13
51.755019808E12 12/08/2025
The best!
[This review was collected as part of a promotion.] I’ve only used one bottle so far and I see results. It is definitely worth the price!
Originaly posted on kerastase-usa.com
Purple Conditioner
51.754925314E12 11/08/2025
great serum
The serum is concentrated and helps heals the thinning areas
Originaly posted on kerastase-usa.com
Roselyn
51.754884804E12 11/08/2025
I like it
[This review was collected as part of a promotion.] I really like it the consistency is not oily at all and I’m already seeing the results
Originaly posted on kerastase-usa.com
Anisha25
51.754885706E12 11/08/2025
Amazing product
[This review was collected as part of a promotion.] I really liked this serum and saw a difference in my hair
Originaly posted on kerastase-usa.com
Llaneritax3
51.756671309E12 31/08/2025
The best serum for my hair
After years of searching for a hair treatment that truly works, I finally stumbled upon Kerastase. I’m thoroughly impressed with the results I’ve seen in just one month.
Originaly posted on kerastase-usa.com
Shera5
31.754940492E12 11/08/2025
Time will tell
I don’t see any changes yet but haven’t used the whole bottle yet
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi Shera5, thank you for reaching out about Genesis Serum Fortifiant Hair Serum. We aim to provide the highest quality products to our consumers. Your feedback is important to us and will be shared with the team.
Bailey
11.755810488E12 21/08/2025
Hair loss
I bought this product because I wanted to see what the hype was about, I applied it how i was supposed to and then over time i noticed my hair was falling out more than ever... my hair has actually fallen out so much from this serum that i have visible bald patches.. ive seen other comments that this had happened to others and I feel like people should be made aware that this could happen to them aswell.. it's been super upsetting to watch my hair fall out like this ..since stopping the serum my hair fall has been less but the damage is already done unfortunately..
Originaly posted on kerastase.ca
Reply from BEC
We are sorry about your experience with our Genesis Anti-Breakage Fortifying Serum. We want to help in the best way we can. Therefore, we have forwarded your comments to the appropriate department for further assistance. A member from our team will get in touch with you shortly.
Elizabeth Fe
51.754747106E12 09/08/2025
Maravilloso
Este suero es excelente, hace que mi pelo crezca y no deja mi pelo graso, es suave y fresco, me encanta, si deseas que tu pelo crezca sano y fuerte este suero es lo mejor.
Originaly posted on kerastase-usa.com
Nguer29
41.754718309E12 09/08/2025
Amazing
Love this hair product. It has helped with hair growth and hair loss. I use it almost daily. I gave it 4/5 because even though it’s good it’s still very pricey.
Originaly posted on kerastase-usa.com
Meg Gh
51.754688621E12 08/08/2025
Great
I was recommended this product for losing hair. It definitely made it better.
Originaly posted on kerastase-usa.com
Each wy
31.754661035E12 08/08/2025
Can
El I can’t tell ghost quick yet but u think the will work soon
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Genesis Serum Fortifiant Hair Serum. We understand results can take time and are hopeful you'll see the difference soon.
Rachna
51.754635531E12 08/08/2025
Solid product
It really works, arrested my hair fall significantly
Originaly posted on kerastase-usa.com
MariaRC
51.754616614E12 07/08/2025
This is my favorite
This smells great, soothes my scalp, absorbs quickly and my hair growth is improving
Originaly posted on kerastase-usa.com
Melisatheagent
51.754660725E12 08/08/2025
Growing
My hair is growing the smell is unbeatable , my ends look healthy
Originaly posted on kerastase-usa.com
Lauraelisaar
51.754494218E12 06/08/2025
the best!!!
THE BEST SERUM IF USED CONSISTENTLY. When I stopped using, my hair started falling again.
Originaly posted on kerastase-usa.com
Katiecash
51.754464509E12 06/08/2025
Love
Love this line. Has helped my hair from thinning and breaking
Originaly posted on kerastase-usa.com
MNRBBB
31.75457794E12 07/08/2025
I’m 50/50 yet.
[This review was collected as part of a promotion.] Have used twice now with a couple months break between each both use. I was excited to buy it again once I saved a little to spoil myself - thinking I remembered this product worked impressively well for me to notice a difference. But the second time I purchased it a few months later and after finishing this bottle I didn’t feel I felt much difference, if at all, this second time. Not sure if I want to risk trying it again third time 🤔..
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Genesis Serum Fortifiant Hair Serum. We truly appreciate your continued support and are sorry to hear that your second use of the product didn't deliver the same impressive results as your first. Your feedback is very valuable to us, and we understand your hesitation.
shannn
51.754406014E12 05/08/2025
best scalp serum
[This review was collected as part of a promotion.] lightweight oil with less hair loss and breakage. one bottle used and already notice less hairfall.
Originaly posted on kerastase-usa.com
Jweston
51.754275507E12 03/08/2025
So far, so good. Looking forward to continued use
I’ve only been using this serum for about a month but I really do see a difference. I’ll continue using for a few more months but so far I am seeing less hair fallout and some growth.
Originaly posted on kerastase-usa.com
Brandyleigh777
51.754169308E12 02/08/2025
An instant icon
This is the one product that had lived up to the hype. I have seen more hair growth with this ONE product versus my cocktail of vitamins and different hair growth shampoos I have tried over the years. THIS ONE IS THE ONE!!!
Originaly posted on kerastase-usa.com
Ibhoska
51.75416392E12 02/08/2025
Stronger and Shinier Hair!
This serum has completely transformed my hair! It feels stronger, smoother, and looks shinier after just a few uses. It absorbs quickly, doesn’t leave any greasy residue, and the scent is subtle and pleasant. I’ve noticed much less breakage and my hair feels healthier overall. Highly recommended!
Originaly posted on kerastase-usa.com
Jen Nish
51.754024406E12 01/08/2025
I think it works?
I think this stuff works? It does seem to add volume when you put it on, and longer term I think it does help with growth.
Originaly posted on kerastase-usa.com
LWHDGG01
51.754056809E12 01/08/2025
Would purchase again
[This review was collected as part of a promotion.] Have noticed a decrease in hair fallout, love the scent
Originaly posted on kerastase-usa.com
Babygirl
51.753972209E12 31/07/2025
After a few weeks you can see it working.
[This review was collected as part of a promotion.] I have been using this for a few weeks now, and I can see it working well. But I did have to put it in a spray bottle because my hands are so small. I feel it works much better than putting into my hand.
Originaly posted on kerastase-usa.com
JessyM
31.753967577E12 31/07/2025
Not enough time for accurate review
I know some did not like the smell, but I loved it! It made the experience feel luxurious, and for the price, I would hope so. I used it for about three months. Although I have noticed a slight difference (less shedding), I do not know if that is due to other new products I have been testing.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Genesis Serum Fortifiant Hair Serum. We're absolutely thrilled to hear you loved the luxurious scent and experience our product provided! It's wonderful that you've noticed a slight difference with less shedding, and we appreciate you sharing your positive experience with us. Thank you for your valuable feedback!
I in SC
51.75392732E12 30/07/2025
It does fortify the hair!
I am a woman in my sixties, my hair was thin and prone to fall. I have been using the Genesis Serum for the last month, twice a week, right after washing my hair with Kerastase Densifique Shampoo and Conditioner. Very pleased with the results I am getting.
Originaly posted on kerastase-usa.com
cindydoeshair
51.753937105E12 31/07/2025
Slow but steady growth
I have been using for a little over a month and slowly seeing hair growth. Still not seeing thicker hair but definitely growth. Will stick with it.
Originaly posted on kerastase-usa.com
Vicky G
41.753888512E12 30/07/2025
Fast absorbing scalp serum
[This review was collected as part of a promotion.] Definitely reordering this serum as I enjoy massaging it into my scalp, Resistance Serum Extentioniste still my top choice.
Originaly posted on kerastase-usa.com
Mich18
51.75387051E12 30/07/2025
Great scalp serum
Been using this to help strengthen my hair. I could tell there’s definitely less breakage
Originaly posted on kerastase-usa.com
Lindsey R
51.754151309E12 02/08/2025
New growth
I have been using this product for 2 months and can tell my hair is becoming stronger and thicker, especially 2-3 inches from my scalp. My hair dresser recommended this product to me and so glad she did
Originaly posted on kerastase-usa.com
Kaysoooo
51.753848006E12 30/07/2025
Amazing product
I started using this product June 24th, and in 2 weeks I had already noticed a difference in my hair. Its now been over a month and the results are life changing! I only use one dose to the black line, sometimes twice a day, sometimes only once a day. Having a clean scalp is key for sure! A little goes a long way and I just ordered my 2nd bottle, and also a bottle for my mom to try!!
Originaly posted on kerastase-usa.com
Thedailycarmen
51.753884912E12 30/07/2025
Hair hydration
Is one of the best treatments I had for my hair in a while
Originaly posted on kerastase-usa.com
Anonymous
51.753803009E12 29/07/2025
Works wonders for my hair
I’m in love with this product, works really good for my hair
Originaly posted on kerastase-usa.com
Magic drops
51.753805717E12 29/07/2025
Best product to save my hair
[This review was collected as part of a promotion.] This has been the best and only product that really helped me to stop my hair falling
Originaly posted on kerastase-usa.com
Maddie Sue
51.753805717E12 29/07/2025
This product makes my hair feel soft and silky
[This review was collected as part of a promotion.] Genesis Serum I was instructed to use to reduce the breakage of my hair and to help strengthen the hair to deter split ends. I will say using this product morning and evening it has definitely helped to strengthen my hair.
Originaly posted on kerastase-usa.com
Anti-Breakage Fortifying Hair Serum 90ml
Kerastase - Genesis
Daily anti hair-fall fortifying serum for weakened hair, prone to falling. The serum improves hair resistance to minimize hair-fall and maximize beautiful hair.
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1 (877) 625-4735 